Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 515 for “"Resonator"”.
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Photonic resonator interferometric scattering microscopy
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2024-05-01
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Studies in optical resonator gyroscopes
Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1992.
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Gallium Nitride phononic crystal resonator
We present a Gallium Nitride (GaN) Lamb Wave resonator using a Phononic Crystal (PnC) to selectively confine elastic vibrations with wide-band spurious mode suppression. A unique feature of the design demonstrated here is a folded PnC structure to relax energy confinement in the non-resonant …
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Coupled-waveguide Fabry-Perot resonator
… semiconductor lasers. Conventional Fabry-Perot resonators provide a narrow spectral width but lack the capability of mode discrimination. A new coupled-waveguide Fabry-Perot resonator made of two parallel waveguides with reflecting mirrors at the ends is proposed for application as narrowband …
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Characterization of Protein Using SAW Resonator
… and protein samples, by using SAW or SAW related resonator devices. Specifically, we would like to quickly characterize liquids like albumin or other liquid materials that may be expensive or difficult to obtain in large quantities. It would be a great benefit to be able to find the conductance, …
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Einzelne Kalziumionen in einem optischen Resonator
… fuer das elektromagnetische Feld eines optischen Resonators zu verwenden. Bei einer Anregungswellenlaenge von 397 nm konnte das Feld mit einer Aufl¨osung von 60 nm unterhalb der Beugungsgrenze vermessen werden. Die untere Grenze der Aufloesung wird bei Verwendung eines gespeicherten Ions nur durch …
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Split Ring Resonator (SRR) based metamaterials
… that of the wavelength of light. The Split ring resonator (SRR) is such a nanostructure that forms the basic unit of a metamaterial. Since the dimensions of the SRRs are required to be smaller than the resonance wavelength, it becomes critical when response is required at the near infrared and …
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Dielectric Resonator Antennas : theory and design
Theoretical models for the analysis of Dielectric Resonator Antenna (DRA) are developed. There are no exact solutions to many of the problems in analytical form, therefore a strong focus on the physical interpretation of the numerical results is presented alongside theoretical models. I have used …
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Acoustic metamaterials : microperforated shell and Helmholtz resonator
… silencer. Specifically, five slit-type Helmholtz resonators, which possess a massive viscous area, are packed together to create a single-layer silencer. In turn, two single-layer silencers are combined to form a double-layer silencer, which in theory double performance on noise blocking of the …
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Higher-order crystalline topology in resonator circuits
"Symmetries play a vital role in physics, forming the core of the most fundamental theories about our universe. When symmetries are enforced in materials having an energy gap, certain properties of the material can become quantized to specific values that remain constant even if the material is …
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Birdcage resonator design in magnetic resonance imaging
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Nuclear Engineering, 1995, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering, 1995.
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A piezo-tunable gigahertz cavity microelectromechanical resonator
… and testing of a electromagnetic cavity resonator designed for such applications. Alternative technologies provide wide tuning or high Q, but not both, and are generally not tunable. This resonator is distinguished by its simultaneous high Q near 200 and its wide high-frequency tuning …
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Piezoelectric MEMS resonator characterization and filter design
… first measurements of a new piezoelectric MEMS resonator developed at Draper Laboratory. In addition, some simple filter designs incorporating the resonator with predicted performance parameters were analyzed, with a special focus on the suitability of using the Draper resonator to implement …
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QUBIT COUPLED MECHANICAL RESONATOR IN AN ELECTROMECHANICAL SYSTEM
… system. In this system the mechanical resonator is capacitively coupled to a superconducting transmon which is embedded in a superconducting coplanar waveguide (CPW) cavity. The difficulty of achieving high quality of superconducting qubit in a high-quality voltage-biased cavity is …
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Coupled resonator based wireless power transfer for bioelectronics
… this dissertation, I propose the use of coupled resonator WPT for bioelectronics and present a new generalized analysis and optimization methodology, derived from complex microwave bandpass filter synthesis, for maximizing and controlling coupled resonator based WPT performance. This newly …
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Vertical waveguide-coupled microring resonator: Design and simulation
… the coupling in micron-scale microring resonators. This method has been shown to give fast and accurate results in calculating the properties of in-plane coupling structures. We have adapted this algorithm to analyze the properties of a vertical coupling structure in detail. The vertical …
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The fabrication of photonic bandgap bridge resonator structures
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1994.
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Enhanced light-atom interaction in an optical resonator
Cavity quantum electrodynamics is a powerful platform for manipulating photonƯatom interactions. In this thesis, we explore its applications in photonic and atomic state preparation. With an optical cavity and an ensemble of cesium atoms, we demonstrate that, for two light fields [psi]s (signal) …
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